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FEATURES

APPLICATIONS

DESCRIPTION

DAC5652

SLAS452A – MARCH 2005 – REVISED FEBRUARY 2006

DUAL, 10-BIT 275 MSPS DIGITAL-TO-ANALOG CONVERTER

•

Cellular Base Transceiver Station Transmit

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10-Bit Dual Transmit Digital-to-Analog

Channel

Converter (DAC)

– CDMA: W-CDMA, CDMA2000, IS-95

•

275 MSPS Update Rate

– TDMA: GSM, IS-136, EDGE/UWC-136

•

Single Supply: 3.0 V to 3.6 V

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Medical/Test Instrumentation

•

High Spurious-Free Dynamic Range (SFDR):

•

Arbitrary Waveform Generators (ARB)

80 dBc at 5 MHz

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Direct Digital Synthesis (DDS)

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High Third-Order Two-Tone Intermodulation

•

Cable Modem Termination System (CMTS)

(IMD3): 78 dBc at 15.1 MHz and 16.1 MHz

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Independent or Single Resistor Gain Control

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Dual or Interleaved Data

•

On-Chip 1.2-V Reference

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Low Power: 290 mW

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Power-Down Mode: 9 mW

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Package: 48-Pin Thin-Quad Flat Pack (TQFP)

The DAC5652 is a monolithic, dual-channel, 10-bit, high-speed DAC with on-chip voltage reference.

Operating with update rates of up to 275 MSPS, the DAC5652 offers exceptional dynamic performance,

tight-gain, and offset matching characteristics that make it suitable in either I/Q baseband or direct IF

communication applications.

Each DAC has a high-impedance, differential-current output, suitable for single-ended or differential

analog-output configurations. External resistors allow scaling of the full-scale output current for each DAC

separately or together, typically between 2 mA and 20 mA. An accurate on-chip voltage reference is

temperature-compensated and delivers a stable 1.2-V reference voltage. Optionally, an external reference may

be used.

The DAC5652 has two, 10-bit, parallel input ports with separate clocks and data latches. For flexibility, the

DAC5652 also supports multiplexed data for each DAC on one port when operating in the interleaved mode.

The DAC5652 has been specifically designed for a differential transformer-coupled output with a 50-

Ω

doubly-terminated load. For a 20-mA full-scale output current, both a 4:1 impedance ratio (resulting in an output

power of 4 dBm) and 1:1 impedance ratio transformer (–2 dBm output power) are supported.

The DAC5652 is available in a 48-pin TQFP package. Pin compatibility between family members provides 10-bit

(DAC5652), 12-bit (DAC5662), and 14-bit (DAC5672) resolution. Furthermore, the DAC5652 is pin compatible to

the DAC2900 and AD9763 dual DACs. The device is characterized for operation over the industrial temperature

range of –40°C to 85°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright © 2005–2006, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.